public class Test {
    public static void main(String[] args) {
        Object o1 = new Object();
        Object o2 = new Object();
        Thread t1 = new Thread(() ->{
           synchronized (o1){
               try {
                   Thread.sleep(1000);
               } catch (InterruptedException e) {
                   e.printStackTrace();
               }
               synchronized (o2){
                   System.out.println("t1111");
               }
           }
        });
        Thread t2 = new Thread(() -> {
           synchronized (o2){
               try {
                   Thread.sleep(1000);
               } catch (InterruptedException e) {
                   e.printStackTrace();
               }
               synchronized (o1){
                   System.out.println("t2222");
               }
           }
        });
        t1.start();
        t2.start();
    }

}
